/*************************************************** file: Parser.h* date: 2006-04-12* author: wuzuyang* describe: none; parser**************************************************/#include "common.h"#include "Lexer.h"#include "SyntaxTree.h"class Parser{private:	Lexer *lexer;	Token currentToken;	Token nextToken();		SyntaxTree* Statement();	SyntaxTree* Assign();	SyntaxTree* Expression();		SyntaxTree* T();		SyntaxTree* F();	SyntaxTree* Condition();	SyntaxTree* Boolean();		SyntaxTree* T2();		SyntaxTree* F2();	SyntaxTree* While();	SyntaxTree* Begin();	SyntaxTree* Block();	void printError(const char *error);public:	Parser(char* sourcefile);		Parser();		~Parser();		void reset();		void printError();		SyntaxTree* parse();		void setLexer(Lexer *srclexer);	};